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Convert OTMU to OGMU

Verified by Adam B.· reviewed by FE Editorial ·updated Jun 23, 2026
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Is it possible to convert OTMU to OGMU?
Yes - OTMU converts to OGMU.

An .otmu file is a matrix template and an .ogmu file is an actual matrix book, both used by OriginLab Origin 2018 and later. You do not convert the file directly; instead you open Origin, create a new matrix from the .otmu template, add or import your data, and save the result as an .ogmu matrix book.

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert OTMU to OGMU?

Users have a saved template with the formatting and settings they want, and they need a working data matrix that follows it. In Origin, templates (.otmu) carry structure and style but no data, while the matrix book (.ogmu) is the populated document. Applying the template produces the .ogmu file people are really after.

How to convert OTMU to OGMU

New from template in Origin

In OriginLab Origin, use File > New > Matrix > Browse to pick your .otmu template, then save the created matrix book as an .ogmu file.

OriginPro

OriginPro opens .otmu templates the same way; create the matrix from the template, populate it, and use File > Save Window As to write the .ogmu.

Set as default matrix template

Save your template as ORIGIN.OTMU so the New Matrix toolbar button always builds new .ogmu books from it automatically.

About these formats

.OTMU Origin Unicode Matrix Template

An OTMU file is a matrix-book template created by OriginLab's Origin, the scientific graphing and data analysis application. It stores the layout of a matrixbook (sheet count, dimensions,…

Open .OTMU details →
.OGMU OGMU File

A .OGMU file is a data file used by specific software.

Open .OGMU details →

Quality & what to watch

  • Templates store only formatting and settings, not data, so the new .ogmu starts empty until you import or enter values.
  • Both formats require Origin 2018 or newer; older Origin versions used .otm and .ogm instead.
  • There is no standalone offline converter - the transformation only happens inside Origin or OriginPro.

Frequently asked questions

What is the difference between `.otmu` and `.ogmu`?
.otmu is a reusable matrix template holding structure and style; .ogmu is a matrix book that also contains actual data.
Do I need any extra software?
You need OriginLab Origin or OriginPro 2018 or later; no other program reads these unicode formats.
Will my data come across from the template?
No. Templates carry no data, so you add or import your values into the new matrix book before saving.
Can older Origin versions open these files?
No. The unicode .otmu/.ogmu formats require Origin 2018 or newer; pre-2018 used .otm and .ogm.